Peanut production in our country constantly suffers from the risk of Aspergillus flavus infection and aflatoxin pollution,especially in peanut producing areas along Yangtze River Basin. Based on the preliminary devel-opment of the microbial agent ARC-BBBE by the team,the demonstration technology of ARC-BBBE peanut pro-duction was carried out in four provinces (Hubei,Hunan,Jiangxi and Sichuan) in the peanut producing areas of Yangtze River Basin in 2022. The research results showed that:in the peanut producing areas of the Yangtze River Basin,the inhibition ratio of Aspergillus flavus abundance in soil by ARC-BBBE ranged from 36.87％ to 94.70％,with an average inhibition ratio of 63.02％. At the same time,ARC-BBBE could enhance the nitrogenase activity,increase the number and weight of peanut nodules,and increase the biomass of peanut plants. The yield increase range of peanut was 7.23％-53.85％,and the average yield increase rate was 20.58％. Comprehensive demonstra-tion results:applying ARC-BBBE to peanut can be used as a cultivation technology to increase peanut yield per unit area,improve peanut productivity and guarantee the healthy development of peanut industry. It is strongly sug-gested to further expand the demonstration area.
Arachis hypogaea Linn.ARC-BBBEpeanut producing area of the Yangtze River BasinAspergillus flavusaflatoxinnitrogenase activity of peanut nodules
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